Family Safety stops blocking sites, reports no activity

This morning I got a weekly activity report from Family Safety that said "no activities were found" for my son. This is obviously incorrect since he uses the computer and internet for several hours a day (online classes). The previous week, PC and Web activity were reported correctly.

To investigate, I logged into my son's account on the computer he's usually on, and tried a few web sites to see if FS was still filtering. No filtering was being applied. I checked the Family Safety settings for his account, and there were no apparent changes. FS was enabled, and the list of allowed sites appeared correct. I switched users and logged in as myself, checked the same FS settings. They were fine. I then switched back to my son's account. All of the sudden, a number of Family Safety notifications popped up. When I tried to visit the same sites I did a few minutes before, they were now blocked.

Please help me understand why the FS safety software utterly failed to protect my family this past week. I have seen many other posts noting similar behavior where FS inexplicably stops working for weeks or more.

Environment:

- Windows 8, child's user account is linked to his Microsoft account

- Family Safety is enabled for child's account

- Family Safety has time limits, web filtering, and app restrictions enabled for this child

I am having some other problems with Family Safety on a different computer running Windows 7, which may or may not be related.

- The Parental Controls does not show up-to-date settings. For example, the time limits are not the same as the ones defined on the FS web site.

- If I try to make any changes through the control panel, I get an error ("Unable to make changes to parental controls settings").

Hope you can help. :/

--Bob